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MATHEMATICA BOHEMICA, Vol. 121, No. 2, pp. 143-150, 1996
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Two types of retract irreducibility of connected monounary algebras

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Danica Jakubikova-Studenovska

* Danica Jakubikova-Studenovska*, Prirodovedecka fakulta UPJS, 041 54 Kosice, Jesenna 5, Slovakia

**Abstract:** Let $\Cal A$ be a connected monounary algebra. The paper deals with retract irreducibility of $\Cal A$ in the class of all connected monounary algebras and in the class of all monounary algebras.

**Keywords:** monounary algebra, connected monounary algebra, retract, retract irreducibility

**Classification (MSC91):** 08A60

**Full text of the article:**

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